Difference between inet and cidr

Поиск
Список
Период
Сортировка
От Yan Cheng CHEOK
Тема Difference between inet and cidr
Дата
Msg-id 1309848653.43477.YahooMailClassic@web65703.mail.ac4.yahoo.com
обсуждение исходный текст
Ответы Re: Difference between inet and cidr
Список pgsql-general
Дерево обсуждения
May I know what is the difference among cidr and inet? I read through Network Address Type (http://www.postgresql.org/docs/8.3/static/datatype-net-types.html)

"""
The essential difference between inet and cidr data types is that inet accepts values with nonzero bits to the right of the netmask, whereas cidr does not.
"""

I understand what is Subnet Mask from http://en.wikipedia.org/wiki/Subnetwork. But, what does it mean by "nonzero bits to the right of the netmask"? Is there any example to show the difference among the 2?

If I provide the following input 1.2.3.4, this is what I am getting if I view through pgAdmin.

inet = 1.2.3.4
cidr = 1.2.3.4/32

В списке pgsql-general по дате отправления:

Предыдущее
От: David Johnston
Дата:
Сообщение: Re: Finding latest record for a number of groups in an INSERT-only table
Следующее
От: Alban Hertroys
Дата:
Сообщение: Re: Finding latest record for a number of groups in an INSERT-only table